Here is the full list of all 41 Amnesia: Rebirth achievements.
Collected all the other achievements.
Completed the game faster than any Frictional developer.
Found all Hank's notes on the crew of the Cassandra.
Found all the memories recorded by others.
Burned a forest's worth of matches to illuminate dark places.
Spared an innocent, perhaps dooming an unborn child.
Sent extra objects through the portal in the Alchemist's Chambers.
Found treasure beneath the water.
Kept quiet and still, and so escaped a predator's gaze.
Escaped a cage in the Arsenal without setting off a grenade.
Found an unfinished letter from an archaeologist to his sister.
Left when things were getting interesting in Amnesia: Rebirth.
Escaped to Paris with a daughter that must now be cared for.
Sacrificed everything to cast down a god and end suffering.
Resisted fear, and resisted anger.
Left a daughter in the care of a god, and was reborn.
Completed the story.
Gave birth to a daughter, only to lose her.
Reached the doctor.
Failed to reach a child, separated by deep waters.
Tortured an innocent to aid an unborn child.
Smashed lots of irreplaceable objects.
Operated a scanning device, and learned of a child's illness.
Activated a portal between worlds.
Drained the fear and the life from a crewmember.
Activated the alchemists' device.
Collected notes to fill a journal.
Escaped the Shadow.
Took a walk in the park.
Travelled through the desert.
Found a way through the ruined cistern.
Popped the lid on some carefully stored meat.
Fired a cannon at the fortress gate.
Explored the inner fortress, and spoke to the doctor.
Took time to talk with an unborn child.
Gazed at a reflection in the water.
Followed the pilgrim's trail to take refuge in the fort.
Carried on with life, despite Salim's fate.
Dreamed of Paris.
Followed Salim's trail.
Awoke with fragmentary memories after the crash of the Cassandra.